"I can see that this He Bin still has his own autonomy; he hasn't become a complete tool for the He Lan family, and most importantly, he seems to still care about his mother. And if that's true, then he will try his best to discover the truth."
After he confirmed He Lan Chang was really related to his mother's death, he would stop working for them. He might not end up as their ally, but he wouldn't stand in their way.
As long as it could help Xinghe take down the He Lan family, she would not overlook it.
Furthermore, Xinghe understood He Lan Chang would definitely be suspicious if she just let him go just like that. According to their cruel personality, if they were in any way suspicious of He Bin, they would definitely act on it. He Bin would be in for a world of pain and Xinghe hoped it would be enough for him to wake up and see the truth.
